Kii Keyboard help needed

It works well, however, I cannot get the "double spacebar" tap to insert a period. It is the only keyboard I have ever used where it does not work.

Is anyone else having this problem with the demo version?

Does the problem go away if I purchase the full version?

Also, does anyone know how much it costs? I cannot find the price anywhere. My hesitation to purchase it is that the company seems to have no support what-so-ever, so don't want to put money into something that might soon become obsolete if it is very expensive.